Ore-concentrator.



No. 7865799.Y

UNITED' STATES Patented April 11, 1905.

PETER H. cRAvEN, oF"RossLAND,cAnADA.

SPECIFICATION fimingpart @Letters Patentino. reared, aated'Aprn ,Ong-CQVNQENTRATOR, e

Applicaties filed A15r1117;19os. 'serai No. 153,081. f e

' To all whomc't may'concern?V l y Be it'v known that'LPTER CRAV and Province of British Columbia, Canada, I

`have invented certain new and useful Improve- *ments in Ore-Concentr'ators; land I do hereby: 4declare the following to" be a full, clear, rand exact description ofthe invention, suchl aswill l, ro jenable others skilled iny the art to which it ap- 3 sides of said endless belt. This inventionrelates to machines for `con` ycentrating ores, and especially to that lclass of machines in which the ore after having been 'crushed or ground and mixed with 'suitable yfiuids is discharged upon tables provided with pertains to fmake and'use-the saine.

l" means for separating the vslime from the solid matters. Y,

The object of the invention is to simplify,

2O cheapen, and improve the "construction vand operation of said machine; and with this object in view lthe invention consists in an ore-3 3o ycharging the'ore upon the table being broken away; and Fig. 2 represents a transverse vertical sectional view of the same. Y

`f lLike reference characters indicate the same "parts in both figures.

'Y Referring tothe drawings specifically, 1, 2, '3,- and 4 indicate four'upright legs which form part of and support the frame of the machine. 'Brackets 5 and 6 are secured to the frame at I opposite ends in which to form bearings forI 'shafts 7, 8, 9, and 10 at opposite ends of the machine. Upon shafts 7 9,8, and 10, respectively, are pulleys (or it may be drums) 13 14 11 12, upon which are mounted slatted end-l less belts'15 and 16,'the former on thek lower shafts and the latter onjthe upper shafts.,y "Shafts 17 and 18 arel also journaled in the i i brackets 5 and 6 and carry drums 19 and 20,

'about which is mounted a flexible endless belt 'thefupper side of the slatted beltl15 and the upper side upon thefupper side ofy the slatted belt 16,"the endless belt alsoY passing over the l Iv271, the low'er'side of which is supported upon p citizen of the United States of America, vresidling at Rossland, yin the countyoffKootenayi drums'l'?, and 14 on the shafts 7 and 9 outside 'i if of the slatted beltl. yThe uppery and lower i sides 'of the" endlessbelt 21 forrn'the tables "upon which the ore'is dischargcdffrom troughs -22f'and 23,'said ore being discharged upon the upper surface4 of cach of the upper and lowei The shafts 7 Y and l8 carry at one .endV sprocket wheels, upon which is engaged a sprocket Ychain`24, by means of which the shafts are driven at the same speed and in the same direction, motion vbeing communicated to shaft 8 through the Imedium of ra sprocke -chaininot shown) engaging a' sprocket-wheel 25 Von lsaid shaft 8- a'nd' actuated from vany suitable source of power. y

" 'Upon the inside of each of the slatted belts 15 andl are secured two continuous'series of right-angle brackets 26 and 27 near the respective ends of said belts, which prevent the slipping or-moving of said slattedbelts which might occur on yaccount of the amount of lateral inclination of the shafts, belts, and tables necessary to the proper operation of theY ma'- chine. l

to the'left,l as indicatedv by the arrow in Fig. 1, and near the left-hand end above thev belt is a trap 28, secured on arms 29 projecting from the frame, said'trapV being in the form "slightly raised above the surface of the belt vand the other side, asat 31, closer to or in contact with the belt; A trap or inverted trough 32 is mounted over the right-hand end of the lower side of the 'endless belt 21, which Vmoves to the right, asI indicated bythe arrow in Fig. l, said trough 32 having one edge raised from the belt and the other edge in contact rtherewith in the same' "manner asv de- The upperside of the endless belt 21 moves Yof'an inverted trough, with one side, as at 30,

scribed with reference to the trouglrBO. At 5 vthe upper end of thetrap 30 is a suitable jet by 'means of which a stream of suitablii-liuidl may be forced through the trap transversely of the belt, and at the lower end is a hopper or funnel 34, having a purpose hereinafter described, a similar jet device (not shown) being used at the upper end of the trap 32 and a similar funnel 35 being secured at the lower end of said trap.

Along the upper edge of the endless belt 21 is a supporting-ange 36 to prevent the material being operated upon from slipping or being pushed over that edge of the belt.

In the operation of the machine the properly pulverized and mixed ore is discharged from the troughs 22 and 23 upon the upper and lower portions of the endless belt 21, which, as before stated, form the separatingtables, and the slime spreading out upon the tables gradually works its way transversely down the inclined surfaces and is discharged into troughs 37 and 38, extending along the sides of the machine beneath the lower edges of the belt 21. 4rlhe solid portions carried along by the belt pass under the raised edges of the traps 30 and 32 and are held from further motion by the far edges of said traps in contact with the belt, the jets Working in the ends of the traps, as at 33, serving to force their contents down the inclined tables and into the funnel-shaped hoppers 34 and 35. The endless belt 21 vhas both its upper and lower halves, which form the tables, supported throughout their entire extent by means of the two slatted belts, as before described, the

. slatted belts being rotated in unison and the endless belt 21 passing around the drums or wheels on the shafts 7 and 9 and the idlerdrums 19 and 20 on the shafts 17 and 18. Lateral motion of these slatted belts is prevented by means of the flanges 26 and 27, thus securing accuracy of movement, and the upper edge of the endless belt 21 is guarded by the iange 36, thus insuring against waste of material in that direction, said iiange 36 also moving in contact with the end of the slatted belt 15 and serving to prevent the transverse displacement of the endless belt 21, which might occur on accountof the inclined position.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An ore-concentrator comprising a plurality of slatted belts, and a single concentrating-belt traveling with and upon the longitudinal upper surfaces of said supportingbelts, unyielding supports extending longitudinally of the upperstretc-hes of said slatted belts, and means for feeding ore to both the upper and lower stretches of the concentrating-belt.

2. An ore-concentrator comprising a plurality of supporting belts, continuous stiff supports for maintaining the upper stretches of the supporting-belts uniformly in the same plane, a single concentrating-belt traveling with and resting upon the upper stretches of said supporting-belts, and means for feeding pulp to the upper and lower stretches of the concentrating-belt.

3. An ore-concentrator comprising an n pper supporting-belt and a lower supportingbelt, supporting-bars for maintaining the u pper stretches of the said belts in the same plane, throughout, the said bars extending from the drums at the adjacent ends of the slatted belts to the drums at the other endsof said belts, a concentrating-belt traveling over and with the upper stretch of the upper belt and returning upon the upper stretch of the lower supporting-belt, thus forming two concentrating-surfaces, and means for feeding pulp to both the stretches of the concentrating-belt.

4. An ore-concentrator comprising an upper slatted belt and a lower slatted belt, angle-bars for preventing the sagging of the slats of the belts upon the upper stretches of the latter, a concentrating-belt traveling with and upon the upper supporting-surfaces of both of said slatted supportingbelts, and means for feeding pulp to both the upper and lower stretches of the concentrating-belt.

5. In anA ore-concentrator the combination with the frame thereof, of an endless belt suitably mounted for rotation to carry its upper and lower sides in opposite direction, said belt being transversely inclined, troughs for discharging the material upon the upper surfaces of the upper and lower sides of said cndless belt, traps secured in position above the surfaces of the upper and lower sides of said endless belts in the form of inverted troughs, the inner edges of Said traps being slightly raised above said surfaces, and the outer edges in contact therewith, longitudinal troughs along the lower edges of the two tables formed by' said endless belt, funnel-shaped hoppers at the lower ends of said traps, and means for discharging suitable sprays transversely through said traps, substantially as described.

6. An ore-concentrator, comprising an npper and lower endless transversely-inclined supporting-belt, means for preventing the belts from slipping laterally and an ore-concentrating belt traveling' upon the entire npper horizontal surfaces of each of the supporting-belts.

7. An ore-concentrator, comprising upper and lower inclined supporting-belts` a concentrating-belt traveling over the same and guidebars supported in the frame of the concentrator and engaging the supporting-belts for preventing them from slipping laterally.

8. An ore-concentrator, comprising upper and lower inclined slatted belts, projections carried by the said slats and extending inwardly therefrom and guide-bars upon the frame of the concentrator for engaging said TOO projections and preventing the lateral slipping of the supporting-belts and a concentrating-belt traveling over said slatted belts.

9. An ore-concentrator comprising a concentrating-belt and transverse traps or sheds extending across the same, one edge only of each trap engaging the belt and means for directing streams -of Water through the said sheds.

10. Anore-concentrator comprising a concentrating-belt and transverse inverted-U- shaped traps or sheds extendingfacross the same., one edge only of each trap engaging the belt and means for directing streams of Water through the said sheds.

In testimony whereof I hereunto aiiX my .sgnature'in presence of two Witnesses.

PETER H. CRAVEN.

Witnesses:

W. S. DEACON, A. H. MACNEILL. 

